\begin{table}[htbp]\centering
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\caption{Summary Statistics}
\begin{tabular}{l*{3}{cc}}
\hline\hline
                    &\multicolumn{2}{c}{2009-2016}&\multicolumn{2}{c}{2012} &\multicolumn{2}{c}{2016} \\
                    &        mean&          sd&        mean&          sd&        mean&          sd\\
\hline
Abortion Rate, per 1000 women&       5.992&     (4.013)&       6.117&     (3.846)&       5.094&     (3.483)\\
Distance to Closest Clinic&      38.825&    (39.318)&      36.470&    (38.181)&      51.748&    (46.098)\\
Average Service Pop. (1000s)&     249.294&    (75.037)&     244.656&    (74.271)&     327.512&   (118.302)\\
Women 15 to 44, Percent White&       0.873&     (0.121)&       0.874&     (0.121)&       0.862&     (0.123)\\
Women 15 to 44, Percent Black&       0.078&     (0.109)&       0.078&     (0.110)&       0.082&     (0.111)\\
Women 15 to 44, Percent Other Race&       0.049&     (0.035)&       0.048&     (0.035)&       0.056&     (0.037)\\
Percent Age 15 to 19&       0.177&     (0.047)&       0.176&     (0.047)&       0.185&     (0.046)\\
Percent Age 20 to 24&       0.161&     (0.023)&       0.162&     (0.021)&       0.160&     (0.025)\\
Percent Age 25 to 29&       0.163&     (0.014)&       0.163&     (0.012)&       0.169&     (0.012)\\
Percent Age 30 to 34&       0.154&     (0.012)&       0.149&     (0.010)&       0.164&     (0.010)\\
Percent Age 35 to 39&       0.162&     (0.020)&       0.165&     (0.020)&       0.151&     (0.016)\\
Percent Age 40 to 44&       0.183&     (0.032)&       0.185&     (0.033)&       0.170&     (0.026)\\
County Unemployment Rate&       7.395&     (2.232)&       7.848&     (1.600)&       4.723&     (0.995)\\
County Per Capita Income&   42908.948&  (7388.684)&   43014.708&  (6578.352)&   47506.781&  (7958.321)\\
\hline
Observations        &         576&            &          72&            &          72&            \\
\hline\hline
\end{tabular}
\end{table}
